Comey told senators at a hearing Wednesday that he believes WikiLeaks will push out information to damage the United States. But he said responsible journalists with sensitive information will approach the FBI before publication to make sure the news won't put people's lives in danger.

WikiLeaks last year published emails from Democratic email accounts that U.S. intelligence officials believe were hacked by Russia.

Assange tweeted in response that Comey misled the Senate when he said WikiLeaks doesn't inform the FBI it is about to publish sensitive information. Assange said on Twitter: "We did," about the records on CIA hacking tools, and "I know he knows it."